Secondary Return; Condensate Removal - Potterton iHE 100/300 Installation And Servicing Instructions

C R
ONDENSATE EMOVAL
Condensation is formed in the normal operation
of the appliance and this must be continuously
discharged into a drain. Given the acidity level of
condense discharge (pH 3.5 - 4.5) only plastic ma-
terial can be used for the discharge pipe work.
40mm pipe with a drop of at least 30 mm for every
metre of pipework should be used. A trap is sup-
plied which should be connected into a drain via a
tundish or air break.
External pipework and that passing through a
wall to the outside should be run in a minimum of
Soil / Vent Stack
There is no requirement for an additional trap or air break when
connecting drain pipework to an internal or external soil or
vent stack
iHE
iHE SECONDARY RETURN DESIGN
CONDENSATE DISPOSAL EXAMPLES
Fig 2.5
40mm diameter. External pipework should be insulat-
ed to protect against frost and freezing temperatures.
The condensate trap must be fi lled with
water before operating the appliance.
It is important that the condensate fl ow
must be maintained, even in freezing
conditions. In the event that the condensate
becomes blocked, the appliance will
shutdown completely, and will not operate
again until the fl ow has been restored.
Gully
There is no requirement for an additional trap
Fig 2.6
if discharging direct into an open gully.
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